/********************************
 * ETK - Easy ToolKit
 * Copyright (C) 2007-2008 Ekinoks (scv.ekinoks@gmail.com)
 * All rights reserved.
 *
 *    This file is part of ETK.
 *
 *    Foobar is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    Foobar is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with Foobar; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 ***********************************************************************************/

#ifndef __ETK_CALLBACK_H__
#define __ETK_CALLBACK_H__

#include <boost/function.hpp>


#define _ME _1      ///< Pour recevoir un pointeur de l'objet sur le quel on est en train de creer le bind (a mettre dans la liste d'argument de boost::bind)
#define _EVENT _2   ///< Pour recevoir l'objet Event (a mettre dans la liste d'argument de boost::bind)


/*
TODO : voir si Widget stoque les CallBack pour les détruir si l'objet est détruit.
TODO : voir pour l'auto deletable.
*/

namespace etk
{
    class Widget;
    class Event;

    /** Pour créer des CallBacks */
    class CallBack
    {
        public :

            virtual void call(void *event=NULL) = 0;

            virtual void block() const = 0;
            virtual void unblock() const = 0;

            virtual ~CallBack(){};

    };
}


#endif /* #ifndef __ETK_CALLBACK_H__ */

